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ISNSCE Newsletter Newsletter June 2005 Volume 1, Issue 2

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ISNSCE Newsletter Newsletter June 2005 Volume 1, Issue 2 ISNSCE Newsletter Newsletter June 2005 Volume 1, Issue 2 Report from the meeting FNANO’05 Foundation of Nanoscience 2nd Annual Conference (FNANO05) Written by Hao Yan & William Sherman Inside: The 2nd annual conference on Foundations of Nanoscience, chaired by John H. Reif, was held from April 24 to 28, 2005 in Snowbird, Utah. Following on the success of the first From the FNANO conference in 2004, many leading researchers from around the world attended, but Nominating the conference retained its warm and friendly atmosphere. No doubt some were disappointed Committee that the number of talks was kept fairly low. However, this allowed generous amounts of time for frequent poster sessions and food breaks, and provided an ideal environment for - James networking and discussion. Gimzewski Self-assembly continues to be the central theme of the conference. Topics include self- - Andrew assembled architectures and devices, at scales ranging from nano-scale to meso-scale. The Tuberfield conference spans traditional disciplines including chemistry, biochemistry, physics, computer science, mathematics, and various engineering disciplines including MEMS. This DNA11 year’s conference was co-sponsored by the Defense Advanced Research Projects Agency Program. (DARPA) and the International Society for Nanoscale Science, Computation and Engineering (ISNSCE). The FNANO05 program was organized around 13 different tracks and featured 67 talks, most of which were invited, and 45 posters. The tracks included: Self-assembled surface chemistry, nano-optics, principles and theory of self-assembly, self-assembly across scales, peptide self-assembly, viral self-assembly, molecular electronics devices, molecular electronic circuit assembly, self-assembled DNA nanostructures, DNA linked nanoparticle structures, molecular motors, molecular electronics architectures, and fullerene nanostructures. Impressively well-controlled synthesis techniques are being developed for 1 and 2 dimensional systems. Xiaogang Peng presented simple techniques for producing multilayered colloidal nanocrystals with each layer having controlled stoichiometry. Peidong Yang described an exciting development of assembling ultralong crystalline oxide nanoribbons for subwavelength optical waveguide devices. Marya Lieberman presented cutting edge lithography techniques based on molecular lift-off. More complex structures are also being devised based on a variety of different synthetic strategies. Luc Jaeger discussed the use of RNA tectonics to build arbitrary nano-scale shapes. He illustrated the technique by showing numerous AFM micrographs of heart-shaped molecules self assembled from 4 RNA molecules. Jonathan Malo, from Andrew Turberfield’s group, presented impressive results of using a self-assembled DNA lattice to scaffold Ruv A protein. Philip Dawson reported on state of the art techniques for chemical synthesis of polypeptides reaching up to hundreds of peptides in length in many cases and with potential for the incorporation of non-natural chemical groups. Various nano-devices were presented, of which the simplest was depicted in Ben Feringa’s beautiful movie of a rocket-like micro-crystallite shooting around in hydrogen peroxide, a steady stream of expanding bubbles pushing it forward as the hydrogen-peroxidase on its surface catalyzed the formation of oxygen. Feringa also presented a variety of light driven molecular rotors his group has been synthesizing with ever increasing versatility and effectiveness. An assortment of nucleic acid walkers were also reported, with Andrew Turberfield presenting different strategies for powering walkers, Chengde Mao presenting a ‘crawler’ that slowly moves along a track, cleaving RNA strands as it moves along, and Niles Pierce presenting data on how load bearing affects the speed of his DNA based bipeds. Beyond the issue of synthesis, however, a recurring theme in the meeting was the discussion of pitfalls in nanoscience. Ranganathan Shashidhar spoke about how measurements of molecular electronics are often influenced by the specific experimental setups being used and reported observing significant variations when the same properties were measured using different electrode materials or configurations. Later in the week, Stuart Lindsay, Rick McCreery and Amar Flood all emphasized the variation of observed properties of molecular electronic devices when the measurements are carried out in assorted phases and molecular environments. Toward the end of the meeting, Page 2 of 8 Craig Lent pointed out that if the anticipated high-density nano-circuitry were ever built using conducting circuit elements, the heat buildup would be excessive. He discussed strategies for using quantum dot cellular automata based systems to minimize heat production. Many of the presentations emphasized methods for allowing for system errors. Erik Winfree presented a beautiful illustration of how to build an algorithmically self- assembling system that can correct errors that may be introduced into the structure by external irritants. Seth Goldstein presented a novel computer architecture that would be error-tolerant by virtue of being reconfigureable: the wire connections would be assignable after formation of the circuit, so defective elements could be bypassed. Other talks spoke of how to take advantage of the “flaws” in a system. Paul Weiss gave a fascinating talk on self-assembled monolayers. He presented methods for creating, identifying and manipulating defects in the layers to controllably manufacture an assortment of different types of surface features. Rebecca Schulman, from Erik Winfree’s Lab presented an evolutionary synthesis strategy that was based on the slow occurrence of errors in the growth of DNA tiled arrays. Moisset de Espanes related a quite entertaining story of how he found the minimal number of tiles that can be used as self-assembling counters. His method only worked because his computer algorithms accepted good but flawed structures that could be manually adjusted in small ways to generate the optimal solution. Besides the exciting scientific program, two workshops were also held during the evening sessions. The first one featured topics in nanoscience business and consisted of brief presentations and interactive Q&A with the audience led by a panel of corporate officers from a number of venture capital companies investing in nanotechnology. The second workshop was an NSF sponsored competition that gave conference attendees an opportunity to present their thoughts on the foremost challenges and directions of the field. Philip Kuekes was voted the winner for his proposal that nanoscientists endeavor to learn lessons from biology and biological styles of synthesis. The conference also included an open meeting of the ISNSCE. President Nadrian Seeman emphasized that the new organization was not focused in any one country, but was intended to be a truly international organization. He encouraged people to join and to help get involved in running the society. FNANO05 was uniformly regarded as a great success. The FNANO conference provides a synergism for a community of scholars working in self-assembly related areas to interact with each other. There were many more exciting presentations beyond what is mentioned here, including, in particular, a great deal of theoretical work, and experiments in micron scale self-assembly. This meeting will surely grow rapidly in upcoming years, hopefully without losing its engaging camaraderie and collaborative environment. Page 3 of 8 From the Nominating Committee The next year (2006) the ISNSCE President will be our current Vice President, Prof. Grzegorz Rozenberg. So, the next years Vice President position is up for election. The person elected for the Vice President will serve as President the year after (2007). The nominating committee has identified two candidates that are presented to the ISNSCE members, Prof. James K. Gimzewski and Prof. Andrew J. Turberfield. All members are eligible to vote and ballots will be distributed later in the Summer. With this Newsletter we introduce the candidates to the members. Chengde Mao, on behalf of the ISNSCE nominating committee James K. Gimzewski Birth year: 1951 BS and PhD degrees: 1977 Ph.D. in Physical Chemistry, University of Strathclyde, Glasgow, Scotland, UK 1974 B.Sc. (Hons) in Pure Chemistry, Upper Second, University of Strathclyde, Glasgow, Scotland Positions: 2001- Professor of Chemistry, University of California, Los Angeles; 1983-2001 Research Staff Member and Project Leader in Nanoscale Science, IBM Research Division, IBM Zurich Research Laboratory, Rüschlikon, Switzerland; 1979-1983 Post-Doctoral Research Fellow: Plasma-Surface Interactions Group, Institute of Inorganic Chemistry, University of Zurich, Switzerland; 1977-Post-Doctoral Research Fellow: The Radiation Center, Oregon State University. Awards and recognitions: 2001 Dudell Medal and Prize for contribution to Nanoscale science, Institute of Physics, London; 2001 Guinness World Records recognition for the smallest calculator; 1998 The ‘Wired 25’ Award, Wired magazine, The Paramour, Los Angeles; 1997 Awarded the Feynman Prize in Nanotechnology for Experimental Work Feynman Prize Committee and the Foresight Institute, Palo Alto, CA; 1997 The Discover Award for Emerging Fields (Nanotechnology) Epcot 1997 IBM Outstanding Innovation Award in appreciation for Engineering Single Molecules. Representative publications: (1) “Observation of nuclear fusion driven by a pyroelectric crystal,” B. Naranjo,
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